ASTROSAT CZTI

Data Quality Report

Orbit 50663

Creation date: 2025-02-08T22:00:45.053304
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T05_241T01_9000006446_50663cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50663cztM0_level2_quad_clean.evt
Size (bytes)521,441,28088,136,640
Size497.3 MB 84.1 MB
Events in quadrant A6,335,250524,730
Events in quadrant B3,882,885633,354
Events in quadrant C4,854,546545,074
Events in quadrant D3,741,902526,836

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231491
B0158381
C0187261
D0155801

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A628187813.978666%
B62821712.722063%
C62823565.666985%
D62811702.706575%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7166 6281 859 859 11.99% 13.68%
B 7167 6283 79 79 1.10% 1.26%
C 7167 6282 287 287 4.00% 4.57%
D 7166 6281 110 110 1.54% 1.75%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 12 80 2349113 14676.94 647 632 160.0
A 9 191 582584 3636.94 647 632 160.0
A 4 3 150798 938.47 647 632 160.0
B 4 170 223044 1596.8 660 640 139.3
B 5 185 217626 1557.9 660 640 139.3
B 4 206 181339 1297.37 660 640 139.3
C 0 224 993947 5559.78 638 629 178.7
C 15 1 318433 1778.81 638 629 178.7
C 15 174 187534 1046.14 638 629 178.7
D 2 153 433131 2404.36 646 624 179.9
D 15 108 134037 741.66 646 624 179.9
D 2 249 110522 610.94 646 624 179.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter